
Original: $600.54
-65%$600.54
$210.19The Story
The Synchrotech SO-SYN117B — K20 6 speed 1st-2nd-3rd-4th-5h-6th Sleeves with Brass Synchros and Springs (single 5-6) — is a premium brass upgrade engineered for smoother, faster, more durable shifting than factory components. Built to Synchrotech's Pro Series standards and trusted by builders for high-horsepower street and track transmissions.
Premium brass synchros:
- OEM-grade replacement with improved consistency
- Reliable engagement for street and rebuild applications
- Direct-fit — no transmission modification required
Application: K20 6 speed 1st-2nd-3rd-4th-5h-6th Sleeves with Brass Synchros and Springs (single 5-6)
Backed by Synchrotech quality and shipped fast from Speedzone Performance.
Description
The Synchrotech SO-SYN117B — K20 6 speed 1st-2nd-3rd-4th-5h-6th Sleeves with Brass Synchros and Springs (single 5-6) — is a premium brass upgrade engineered for smoother, faster, more durable shifting than factory components. Built to Synchrotech's Pro Series standards and trusted by builders for high-horsepower street and track transmissions.
Premium brass synchros:
- OEM-grade replacement with improved consistency
- Reliable engagement for street and rebuild applications
- Direct-fit — no transmission modification required
Application: K20 6 speed 1st-2nd-3rd-4th-5h-6th Sleeves with Brass Synchros and Springs (single 5-6)
Backed by Synchrotech quality and shipped fast from Speedzone Performance.























